121338747180 has 72 divisors (see below), whose sum is σ = 420640994592. Its totient is φ = 27734570496.

The previous prime is 121338747161. The next prime is 121338747223. The reversal of 121338747180 is 81747833121.

121338747180 is a `hidden beast` number, since 1 + 21 + 3 + 3 + 87 + 471 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48149037 + ... + 48151556.

It is an arithmetic number, because the mean of its divisors is an integer number (5842236036).

Almost surely, 2^121338747180 is an apocalyptic number.

121338747180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121338747180 is an abundant number, since it is smaller than the sum of its proper divisors (299302247412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121338747180 is a wasteful number, since it uses less digits than its factorization.

121338747180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96300615 (or 96300610 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The spelling of 121338747180 in words is "one hundred twenty-one billion, three hundred thirty-eight million, seven hundred forty-seven thousand, one hundred eighty".